﻿<p>Enumeration defining the functional types of air terminals.</p>

	<blockquote class="note">NOTE&nbsp; Architectural louvres within doors or windows are defined by <em>IfcPermeableCoveringProperties</em>.</blockquote>
    
	<blockquote class="history">HISTORY&nbsp; New enumeration in IFC2x2.  Modified in IFC4 to add LOUVRE and remove EYEBALL, IRIS, LINEARGRILLE, LINEARDIFFUSER.</blockquote>
